CN106198390A - A kind of pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor - Google Patents
A kind of pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor Download PDFInfo
- Publication number
- CN106198390A CN106198390A CN201610645818.8A CN201610645818A CN106198390A CN 106198390 A CN106198390 A CN 106198390A CN 201610645818 A CN201610645818 A CN 201610645818A CN 106198390 A CN106198390 A CN 106198390A
- Authority
- CN
- China
- Prior art keywords
- antifouling
- drive link
- reactor
- interior drive
- pollution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The present invention provides a kind of pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor, it is characterized by: arrange antifouling system in reactor cap lower surface.Antifouling system includes seal groove, piece sealing reservoir A, piece sealing reservoir B and antifouling, forms a confined space with upper seal groove, high transmissive optical window, controlled unlatching and the Guan Bi of antifouling by gear train and interior drive link after antifouling Guan Bi；In non-spectral signal acquisition stage, stop the pollution to optics window of the liquid-solid phase material by antifouling, remove antifouling in the spectroscopic acquisition stage of experiment, it is ensured that analyze light beam and through pure optics window and do not occur light path to offset, reduce light energy decay, strengthen feedback signal strength.The present invention has evaded similar microreactor in three-phase and heterogeneous reaction, Substances Pollution optics window, the problem affecting spectrum experiment signal.Ensure that the requirement carrying out the In situ spectroscopic test of High Temperature High Pressure scene under severe conditions with high time-space resolution degree.
Description
Technical field
The invention belongs to instrument analysis technology field, evade liquid-solid phase Substances Pollution high transmissive optical window particularly to one
High-temperature high-pressure dynamic field In situ spectroscopic amount reactor.
Background technology
High Temperature High Pressure heterogeneous catalytic reaction is the response type that chemical industry is common.Gas is in solid-like at reaction conditions
Absorption on product, to react, be desorbed be the important step of heterogeneous catalysis, and the molecular structure of solid sample itself is at reaction conditions
Structure change, be to disclose the formation of catalyst active center, reaction structure-effect relationship and the crucial section knowledge of catalysqt deactivation
Topic.
Modern molecular spectral technique is all widely used in the fields such as physics, chemistry, biology.With Raman spectrum it is
Example, it has carried out numerous studies in terms of the off-line structural characterization of solid state powder sample.Existing Raman spectrum reactor, in temperature
With the on-spot study relative maturity under condition (atmospheric low-temperature), (temperature: 300～1000 DEG C, pressure: 10-under harsh conditions
100 kilograms) on-spot study also can realize, but the investigative technique carrying out complicated heterogeneous reaction under severe conditions becomes the most not
Ripe.
Experimenter is found by lot of experiments, and at the scene in dynamic in-situ experiment, higher unstrpped gas flow velocity can
The high transmissive optical window above fine solid particles impact sample cell can be carried；In complicated pyroreaction system, product component
Complicated various, if the high temperature produced easily coagulates gas rises to reactor cap, meet low temperature high transmissive optical window and condense, form liquid
Drip, liquid film or oil stain are gathered on light path hole and the high transmissive optical window of reactor cap, will result in the decay of incident light spectrum energy and
Feedback signal is disturbed, and affects the accuracy of spectrum analysis.
Summary of the invention
The invention provides a kind of High Temperature High Pressure scene dynamic in-situ test reaction can applied at complicated heterogeneous system
Device, can be used for the dynamic field on-spot study including multiple spectrum technology such as including Raman.The design that packaged type is antifouling,
Non-spectral signal acquisition stage, stops the pollution to optics window of the liquid-solid phase material by antifouling, at the spectral signal of experiment
Acquisition phase removes antifouling, it is ensured that analyzes light beam and through pure optics window and does not occur light path to offset, reduces light energy
Decay, strengthens feedback signal strength.This design expands the scope of application of reactor so that heterogeneous (gas-solid, gas-liquid-solid) reacts
On-the-spot dynamic in-situ spectral investigation there is higher time-space resolution degree.
The present invention is achieved by the following technical solutions:
A kind of pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor, including reactor body and reaction
Reactor cap in device main body, the center of reactor cap has unthreaded hole, and unthreaded hole is furnished with high transmissive optical window, reactor body
There is sample cell and feedstock transportation pipeline, it is characterised in that described reactor also includes that is arranged at a reactor cap following table
The antifouling system in face；
Described antifouling system includes: being positioned at seal groove on antifouling below high transmissive optical window, its both sides set respectively
Being equipped with antifouling piece sealing reservoir A and antifouling piece sealing reservoir B, semicircular antifouling of two panels is installed under antifouling upper seal groove
Surface, forms a confined space with antifouling upper seal groove, high transmissive optical window after Guan Bi, antifouling piece sealing reservoir A and antifouling
The notch of sheet piece sealing reservoir B is corresponding with antifouling position；
One antifouling off-chip drive link is through reactor cap, and first be made up of two gears being meshed is passed through in its lower end
Gear train is connected with the front end of interior drive link A, and the end of interior drive link A passes through second be made up of three gears being meshed
Gear train connect in the front end of drive link B and the front end of interior drive link C, the end of interior drive link C is by being meshed by two
3rd gear train of gear composition connects the front end of interior drive link D, and the end of interior drive link B and the end of interior drive link D are respectively arranged with
One rotates gear, and each rotation gear blocks a crawler belt and realizes the movement of crawler belt；Wherein, interior drive link A stretches out antifouling
Outside piece sealing reservoir A, it is close that interior drive link C sequentially passes through antifouling piece sealing reservoir A, antifouling upper storage tank and antifouling with level
Envelope storage tank B, its position is higher than antifouling, and interior drive link B and interior drive link D is accommodated in antifouling piece sealing reservoir A and antifouling respectively
In sheet piece sealing reservoir B groove；Semicircular antifouling lower surface is fixed in one end of crawler belt, the other end be individually fixed in antifouling close
Seal the top in storage tank A or antifouling piece sealing reservoir B groove.
The reactor body center being positioned under reactor cap is provided with the cylindrical thermal station for placing sample cell, thermal station
Around being wound with heater strip, raw material input channel stretches to bottom thermal station, and reactor body side arranges reactant outlet；
Being additionally provided with cooling-water duct bottom reactor body, side is provided with DCS temperature control system and is connected with thermal station.
Antifouling material of the present invention can be high temperature resistant quartz, pottery or corundum.Feature is can be the most attached according to demand
Corrosive chemical.
Compared with prior art, the invention has the beneficial effects as follows:
(1) reactor cap is provided with antifouling of the packaged type high quartz combined closely, and effectively prevent experimentation
In solid particle, liquid, the pollution to high transmissive optical window of the oil phase spot, add the Validity Test time.
(2) actuating device of antifouling, may be implemented in the movement to antifouling of quartz under high-temperature and high-pressure conditions.
(3) the combination design of heating system, cooling water system, sample cell and antifouling expands the application model of reactor
Enclose.
Accompanying drawing explanation
Fig. 1 is pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic measurement reactor broken away view.
Wherein, 1: reactor cap, 2: high transmissive optical window, 3: antifouling, 4: antifouling upper seal groove, 5: antifouling sealing
Storage tank A, 6: antifouling piece sealing reservoir B, 7: antifouling off-chip drive link, 8: thermal station, 9: reactor feedstocks entrance, 10: product exit,
11: circulating water channel, 12:DCS controlling organization, 13: interior drive link A.
Fig. 2 is the bottom diagram (a) of antifouling system, front view (b), side view (c).
Wherein, 2: piezoid, 3: antifouling, 4: antifouling upper seal groove, 5: antifouling piece sealing reservoir A, 6: antifouling is close
Envelope storage tank B, 13: interior drive link A, 14: interior drive link B, 15: interior drive link C, 16: interior drive link D, 17: rotation gear, 18: carry out
Band.
Fig. 3 is antifouling system and the top view (a) of reactor cap coupling unit, side view (b), front view (c).
Wherein, 1: reactor cap, 3: antifouling, 4: antifouling upper seal groove, 5: antifouling piece sealing reservoir A, 6: antifouling
Piece sealing reservoir B, 7: antifouling off-chip drive link, 13: interior drive link A.
Fig. 4 is antifouling system tradition schematic diagram.
Wherein, 3: antifouling, 7: antifouling off-chip drive link, 13: interior drive link A, 14: interior drive link B, 15: interior drive link
C, 16: interior drive link D, 17: swing pinion, 18: crawler belt, 19: the first gear trains, 20: the second gear trains, 21: the three gear trains.
Fig. 5 is reactor body schematic diagram.
Wherein, 8: sample cell and thermal station, 9: reactor feedstocks entrance, 10: product exit, 11: circulating water channel, 12:DCS
Controlling organization.
Fig. 6 is that the high-temperature high-pressure in-situ Raman spectrum living through journey vowed by Fe-Mn bimetallic catalyst.
Wherein, Fig. 6 a is under the same terms, uses traditional reactor to carry out the Raman spectrum tested, and Fig. 6 b is the same terms
Under, use the pollution-proof reactor of the present invention to carry out the Raman spectrum tested.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
This.
The embodiment of antifouling system is as follows:
Rotating antifouling off-chip drive link 7 drives interior drive link A13, interior drive link A13 to connect the by the first gear train 19
Two gear trains 20, it is achieved interior drive link B14, the linkage of interior drive link C15；Interior drive link C15 is connected by the 3rd gear train 21
Interior drive link D16.Interior drive link B14 and interior drive link D16 end all have rotation gear 17, rotate gear 17 and block crawler belt 18,
To realize the movement of crawler belt 18.By this drive system, rotate antifouling off-chip drive link 7, the unlatching of two panels antifouling 3 can be realized
And closed procedure.When antifouling 3 Guan Bi of two panels, one can be formed and sealed by antifouling 3, transmissive optical window 2 and antifouling are upper
The confined space of groove 4 composition.
Reactor body includes sample cell and thermal station 8, reactor feedstocks entrance 9, product exit 10 and circulating water channel 11.
It is wound with heater strip around thermal station, builds DCS controlling organization 12 by embedding annular heat galvanic couple processed, to realize microreactor wider
In the range of accurate temperature controlling.Reactor body is provided with cooling-water duct 11, it is ensured that cell body not temperature influence and deform, prolongation makes
Use the life-span.The nacelle space placing sample cell has been built in thermal station.
Sample cell is bottom opening, and top has thin slice and carries the cylinder of groove, and material is rustless steel, pottery or corundum.Feature
It is according to demand powder sample and molding sheet sample can be carried out spectroscopic assay.
Embodiment
In this example, pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic measurement is with reactor as shown in Figure 1.Reactor
Main body and reactor cap material are rustless steel, and main diameter is 62mm, high 20mm, and inner sample pool space size diameter is
24mm, deep 16mm.Sample cell external diameter 14mm, internal diameter 10mm, deep 5mm, thin slice carries groove diameter 12mm, deep 1mm.Outside sealing O
Footpath is 43.5mm, internal diameter 38.5mm.High transmissive optical window diameter 17mm, thick 1mm, antifouling diameter 19mm of quartz, thick 1mm.
In this example, by Fe-Mn bimetallic catalyst in F-T synthesis reaction system deactivation mechanism research as a example by, sample
Product are filled in and are lined with in the sample cell 8 of silica wool and are compacted, and cover O type packing ring, high transmissive optical window 3 and reactor cap and (keep
Antifouling is in the pattern of removing), then reactor is fixed in detection platform, regulation camera lens and position of platform, regulates sample
Position, pond, makes laser focusing on sample.Air inlet and gas outlet are connected with Material supply system and product detecting system respectively,
CO+H2(1:1v:v) inputting with 15mL/min flow, progressively regulation pressure is to 2.0Mpa.Subsequently, by rotating antifouling unofficial biography
Lever 7, in conjunction with each gear train, drive link A13, interior drive link B14, interior drive link C15, the rotation of interior drive link D16 in driving,
Make crawler belt 18 drive two panels antifouling 3 to move under the driving of swing pinion 17, and be allowed to close.Afterwards, then by DCS control
System processed heating sample cell, to 300 DEG C, starts reaction, and adopts spectrum according to requirement of experiment in good time under being kept closed at antifouling
Time.Adopting time spectrum, rotate outer drive link 7 and make antifouling 3 to open, light beam focuses on collection signal on sample, and this daylighting spectrum terminates
After, outer drive link 7 is gone back to, antifouling 3 closes again.Gather collection of illustrative plates and see Fig. 6 b.As reference, same catalyst is placed in tradition
High Temperature High Pressure scene dynamic in-situ reactor is tested with the same terms, and test result is shown in Fig. 6 a.It will be appreciated from fig. 6 that when reaction is carried out
During to 50h, use traditional reactor and product of the present invention, all can obtain the surface carbon material Raman spectrum letter of relatively high-resolution
Number.When reaction is carried out to 80h, the spectral signal intensity of traditional reactor collection is declined to be affected by window transmittance and substantially drops
Low, covered by oil phase completely to during 115h due to window, it is impossible to collect spectral signal.And present case reactor is after 80h
Spectra collection signal intensity and resolution be remarkably reinforced, still can collect effective Raman spectral signal during 115h, prolong
Grow the Validity Test time.
Claims (4)
1. a pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor, including reactor body and reactor
Reactor cap in main body, the center of reactor cap has unthreaded hole, and unthreaded hole is furnished with high transmissive optical window, and reactor body has
There are sample cell and feedstock transportation pipeline, it is characterised in that described reactor also includes that is arranged at a reactor cap lower surface
Antifouling system；
Described antifouling system includes: being positioned at seal groove on antifouling below high transmissive optical window, its both sides are respectively arranged with
Antifouling piece sealing reservoir A and antifouling piece sealing reservoir B, semicircular antifouling of two panels is installed on antifouling upper seal groove following table
Face, forms a confined space, antifouling piece sealing reservoir A and antifouling with antifouling upper seal groove, high transmissive optical window after Guan Bi
The notch of piece sealing reservoir B is corresponding with antifouling position；
One antifouling off-chip drive link is through reactor cap, and its lower end is by the first gear being made up of two gears being meshed
Group is connected with the front end of interior drive link A, and the end of interior drive link A is by the second gear being made up of three gears being meshed
Group connects front end and the front end of interior drive link C of interior drive link B, and the end of interior drive link C is by by two gears being meshed
3rd gear train of composition connects the front end of interior drive link D, and the end of interior drive link B and the end of interior drive link D are respectively arranged with one
Rotating gear, each rotation gear blocks a crawler belt and realizes the movement of crawler belt；Wherein, interior drive link A stretches out antifouling sealing
Outside storage tank A, interior drive link C sequentially passes through antifouling piece sealing reservoir A, antifouling upper storage tank and antifouling with level and seals storage
Groove B, its position be higher than antifouling, interior drive link B and interior drive link D be accommodated in antifouling piece sealing reservoir A respectively and antifouling close
In envelope storage tank B groove；One end of every crawler belt is individually fixed in each semicircular antifouling lower surface, and the other end is individually fixed in
Top in antifouling piece sealing reservoir A or antifouling piece sealing reservoir B groove.
2. pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor as claimed in claim 1, its feature exists
In, described reactor body center is provided with the cylindrical thermal station for placing sample cell, is wound with heater strip around thermal station,
Raw material input channel stretches to bottom thermal station, and reactor body side arranges reactant outlet.
3. pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor as claimed in claim 1, its feature exists
In, it being provided with cooling-water duct bottom reactor body, side is provided with DCS temperature control system and is connected with thermal station.
4. pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor as claimed in claim 1, its feature exists
In, antifouling described material is the one in high temperature resistant quartz, pottery or corundum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645818.8A CN106198390B (en) | 2016-08-09 | 2016-08-09 | A kind of pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645818.8A CN106198390B (en) | 2016-08-09 | 2016-08-09 | A kind of pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106198390A true CN106198390A (en) | 2016-12-07 |
| CN106198390B CN106198390B (en) | 2018-10-26 |
Family
ID=57513822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610645818.8A Active CN106198390B (en) | 2016-08-09 | 2016-08-09 | A kind of pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106198390B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201575979U (en) * | 2009-10-22 | 2010-09-08 | 中国科学院高能物理研究所 | Liquid sample cell and liquid sample device |
| US20120009690A1 (en) * | 2010-07-12 | 2012-01-12 | Taiwan Semiconductor Manufacturing Company, Ltd. | In-situ spectrometry |
| CN102818799A (en) * | 2011-03-11 | 2012-12-12 | 中国科学院半导体研究所 | In situ microscopic Raman characterization system |
| CN103344413A (en) * | 2013-06-21 | 2013-10-09 | 中国科学院上海技术物理研究所 | Device for keeping optical test sample in low-temperature state in nitrogen atmosphere |
| CN103728247A (en) * | 2014-01-06 | 2014-04-16 | 华东理工大学 | In-situ gas-solid phase reaction pool for measuring high-temperature high-pressure dynamic field spectrum in situ |
| AU2015201024A1 (en) * | 2005-05-24 | 2015-03-19 | Lee H. Angros | In situ heat induced antigen recovery and staining apparatus and method |
-
2016
- 2016-08-09 CN CN201610645818.8A patent/CN106198390B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2015201024A1 (en) * | 2005-05-24 | 2015-03-19 | Lee H. Angros | In situ heat induced antigen recovery and staining apparatus and method |
| CN201575979U (en) * | 2009-10-22 | 2010-09-08 | 中国科学院高能物理研究所 | Liquid sample cell and liquid sample device |
| US20120009690A1 (en) * | 2010-07-12 | 2012-01-12 | Taiwan Semiconductor Manufacturing Company, Ltd. | In-situ spectrometry |
| CN102818799A (en) * | 2011-03-11 | 2012-12-12 | 中国科学院半导体研究所 | In situ microscopic Raman characterization system |
| CN103344413A (en) * | 2013-06-21 | 2013-10-09 | 中国科学院上海技术物理研究所 | Device for keeping optical test sample in low-temperature state in nitrogen atmosphere |
| CN103728247A (en) * | 2014-01-06 | 2014-04-16 | 华东理工大学 | In-situ gas-solid phase reaction pool for measuring high-temperature high-pressure dynamic field spectrum in situ |
Non-Patent Citations (2)
| Title |
|---|
| ALEXANDER AERTS ET AL: "Methods for in situ spectroscopic probing of the synthesis of a zeolite", 《CHEMICAL SOCIETY REVIEWS》 * |
| 范峰滔 等: "从分子碎片到活性位_分子筛催化材料的原位：共振紫外拉曼光谱研究", 《中国科学：化学》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106198390B (en) | 2018-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9435757B2 (en) | Sample viscosity and flow control for heavy samples, and X-ray analysis applications thereof | |
| JP6345421B2 (en) | Gas barrier property evaluation apparatus and evaluation method | |
| CN106053428B (en) | A kind of petrochemical industry based on the enhancing of F-P optical signallings carries the sensing device of hydrogen pipeline gas content on-line measurement | |
| JP6304745B2 (en) | Gas barrier property evaluation apparatus and evaluation method | |
| Patil et al. | Design, modelling, and application of a low void-volume in situ diffuse reflectance spectroscopic reaction cell for transient catalytic studies | |
| CN102172503A (en) | Device for researching transfer-reaction in ionic liquid-supercritical fluid in situ | |
| CN202387459U (en) | High-temperature high-pressure photochemical reactor with gas-liquid sampling function | |
| CN101162222A (en) | Tester for testing the performance of new material degrading tail gas | |
| US3348419A (en) | Solids sampling apparatus | |
| CN106198390A (en) | A kind of pollution-proof high-temperature high-pressure dynamic field In situ spectroscopic test reactor | |
| DE102005009582A1 (en) | Determining type, size and/or concentration of components of fluid flow in process chamber, for treating smoke from power station | |
| AT512375B1 (en) | METHOD AND SENSOR FOR MEASURING THE CO2 CONTENT OF FLUIDS | |
| CN205352941U (en) | Real -time pyrolysis detecting system of oil shale | |
| CN106124408B (en) | A kind of condensation-proof type reactor for the test of dynamic field In situ spectroscopic | |
| CN111665090A (en) | A thermoelectric desulfurization absorption tower thick liquid sampler for pH meter | |
| CN1053286C (en) | Enclosure for confining and covering a wall and in particular the vessel head of a nuclear reactor | |
| RU2388668C2 (en) | Unit to open tight metal vessels with toxic substances | |
| DE3151527A1 (en) | Inspection device for the interior of pressure vessels | |
| CN205175907U (en) | Wooden material veneer interface gluing agent depth of penetration's spectral detection device | |
| Salzer et al. | Fourier transform infrared (DRIFT) investigation of glass-covered samples. Study of hydrogen spillover on zeolites | |
| CN109765343A (en) | Tail gas clean-up and PM2.5 adsorption effect detection device and its detection method | |
| CN103728161A (en) | Spectroscopic analysis-based sulfur hexafluoride gas sampling device | |
| CN114624206A (en) | In-situ infrared device based on modulation excitation spectrum | |
| CN114674743A (en) | Double-light-path in-situ infrared spectrum pool based on total reflection | |
| CN105806644A (en) | Blanking pipe sampling device for test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |